forgot to mention plextor cant do digital audio at 40 speed or anywhere near it i think it drops to 32, teac is only one to be able to do it but nero will tell u your read speed should be twice your write speed for digital on the fly audio copying so i cant go as high even with teac as my dvd-rom only do audio at 17 speed as all dvd-roms they cant do audio at same speed as data due to laser been diff from cd-rom only or writer.

you use calculater to work out 40 speed nero tells u is 6000kb that same as 6mb so 700mb disc /6/60 will give u time in minutes i got 1.9 mins